why do we ?

Today iv been thikning why do people have weapons to attack
the world ?
Well you must have something to help me?
You can leave a comment. So do you want to make the world a better plase to live ? I DO!!
------------------------------------------------------------
GUNS NO LOVE YES
KNIFES NO HOPE YES
POLLUTION NO LIFE YES
------------------------------------------------------------
what can WE do to help other people and animals.
PLEAS HELP US !!!